Incidental Diagnosis of Cholecystocolonic Fistula in An Asymptomatic Male: A Rare Case Presentation

Cholecystocolonic fistula (CCF) is a rare complication of chronic gallbladder disease, most commonly seen in elderly women aged 60-70 years. Although most cases are detected on imaging, some are discovered incidentally during surgery. If discovered preoperatively, management can be provided operatively or nonoperatively, depending on symptoms and severity. We present a case of a CCF that was discovered in an asymptomatic 72-year-old man during routine colonoscopy screening. Imaging confirmed the diagnosis, and surgical management was performed. This was initially attempted robotically, but was converted to an open cholecystectomy with a proximal transverse colon resection. The patient's postoperative course was unremarkable, and was followed up for a three-month period after their surgery. This case highlights the atypical presentation of CCF and current diagnostic challenges and surgical approaches.